After the war in Croatia, thousands of landmines were left on the fields and because of this today we have many casualties. Area around Sisak is a region where a large number of landmines were laid and accidents are frequent. The authors of this article present results of retrospective analyses of accidents (death, injuries and type of injuries) which occurred after the military operation "Oluja" since August 1995 until March 2000. Data is collected from local hospital and police department in Sisak and compared with data obtained from Croatian Mines Action Center.